AM62P: AM62P DDR tests: Error -1170 @ 0x0 Unable to access the DAP.

Part Number: AM62P

Hi,

I am trying to run DDR tests on our AM62P based custom board.

I have tried using the DDR-MARGIN-FW: DDR-MARGIN-FW Firmware | TI.com

But just like in the following post, I failed to connect to the SMS0_TIFS_0 core: SK-AM62P-LP: DDR Margin Firmware - Processors forum - Processors - TI E2E support forums

According to the post, I assume I have a HSFS device, and I have to initialize the DDR with an SBL binary.

I also found the following tutorial for the AM62x devices, which provides a workaround for HSFS devices using the sbl_null CCS example: AM62x Family DDR Debug

After following the tutorial:

• I connected an XDS110 Debug port to the board via JTAG
• Downloaded the MCU+SDK: MCU-PLUS-SDK-AM62P Software development kit (SDK) | TI.com
• Imported the sbl_null example: C:\ti\mcu_plus_sdk_am62px_12_00_00_27\examples\drivers\boot\sbl_null
• Removed the DDR configuration from the example.syscfg file
• Modified the main.c file: (I had to deviate from the description to modify the TISCI device names to compile)

// Added this part
status = SOC_moduleClockEnable(TISCI_DEV_MAIN_EMIF_DATA_ISO_VD, 1);
status += SOC_moduleClockEnable(TISCI_DEV_DDR32SS0, 1);
DebugP_assertNoLog(status == SystemP_SUCCESS);
loop_forever();

• Built the project, and generated sbl_null.Debug.hs_fs.tiimage
• Flashed the image with DFU in USB boot mode
• Created a new target configuration for AM62P, and connected to WKUP_R5FSS0_0 core. 

However, after this, there are no available scripts to run under Scripts in the menubar.

And when I try to connect to core SMS0_TIFS_0, I still get:

Error: (Error -1170 @ 0x0) Unable to access the DAP.

Could you please provide further instructions how to set up the DDR test?